diff --git a/call.go b/call.go
index 8fc95d2..7e0dd60 100644
--- a/call.go
+++ b/call.go
@@ -116,3 +116,7 @@ func (c Call) Equal(other Call) bool {
 	otherInput, _ := other.Input()
 	return input != nil && otherInput != nil && proto.Equal(input, otherInput)
 }
+
+func (c Call) String() string {
+	return c.message.String()
+}
diff --git a/dispatchtest/assert.go b/dispatchtest/assert.go
index 2f41736..a49666c 100644
--- a/dispatchtest/assert.go
+++ b/dispatchtest/assert.go
@@ -14,7 +14,7 @@ func AssertCalls(t *testing.T, got, want []dispatch.Call) {
 	}
 	for i, call := range got {
 		if !call.Equal(want[i]) {
-			t.Errorf("unexpected call %d: got %#v, want %#v", i, call, want[i])
+			t.Errorf("unexpected call %d: got %v, want %v", i, call, want[i])
 		}
 	}
 }
@@ -23,7 +23,7 @@ func AssertCall(t *testing.T, got, want dispatch.Call) {
 	t.Helper()
 
 	if !got.Equal(want) {
-		t.Errorf("unexpected call: got %#v, want %#v", got, want)
+		t.Errorf("unexpected call: got %v, want %v", got, want)
 	}
 }